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aleksklad [387]
3 years ago
13

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
4 0

The objective of the experiment is to see if the multivitamin improves short term memory. The population could be the set of all adults in a certain country. The experimental group is the group that gets the multivitamin, while the control group gets a placebo (often just a sugar pill). The groups are usually split 50/50 but they are not always entirely perfectly equal groups. One sample procedure would be to put names into a computer and have the names randomly selected, to determine who goes into the experimental group or the control group.

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IrinaVladis [17]
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3 years ago
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There are 10 marbles in the bag. There are two purple marbles, 3 red marbles and 5 yellow marbles. You will pick a marble three
Evgen [1.6K]

Answer:

30/1000

Step-by-step explanation:

red has a chance of 3/10

purple has a chance of 2/10

yellow has a chance of 5/10

for probability, multiply the denominators together, and the numerators together

3*2*5 = 30

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So the probability of picking red, then purple, and then yellow with replacement is 30 of 1000

Hope this helps!

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3 years ago
Which of the following describes an irrational number?​
RoseWind [281]
A non-terminating and no -repeating decimal
5 0
3 years ago
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Tresset [83]

Answer:

1. 36 sq un

2. 40 sq un

3. 20 sq un

Step-by-step explanation:

The answer for number one is 36 square units because the rectangular area is 24 sq un and the triangular area is 12 sq un so I added them to get 36 sq un. The second answer is 40 sq un because if you cut the shape into 2 shapes you get 2 equal trapezoids. Each trapezoid is 20 sq un so I multiplied it by two to get 40 sq un. The third answer is 20 because the side triangles are 2 sq un each and the square on the bottom is 16 sq un. By the way, sq un means square units lol.

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a serving of ice cream contains 1,200 calories. One hundred forty four calories come from fat. What percent of the total calorie
Gre4nikov [31]
12% come from fat, 144/1200*100= 12%
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